Snow tire with retractable studs
    1.
    发明授权
    Snow tire with retractable studs 失效
    具有可退回条件的雪橇轮胎

    公开(公告)号:US3672421A

    公开(公告)日:1972-06-27

    申请号:US3672421D

    申请日:1970-05-15

    申请人: RESEARCH INC

    发明人: ANDERSON JAMES R

    IPC分类号: B60C11/16

    CPC分类号: B60C11/1612 Y10T152/10279

    摘要: A tire, particularly for operation in icy conditions which has studs that are mounted so they can be retracted or extended pneumatically without changing the external configuration or shape of the tire, and can be extended without utilizing any external pressure sources.